When an unlisted use or uses are proposed to the Commission for a particular zone, or when classification of an unlisted use or uses is requested, the Commission may initiate proceedings, by motion, to ascertain all pertinent facts concerning said proposal or request, hold public hearings and, by resolution, make its findings and state its reasons for classifying or permitting or not classifying or permitting any unlisted use or uses as similar uses in a particular zone.
(`78 Code, § 17.88.020.)